Ahmed Rashed

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hep-ph2024

Constraints on Dark Photon and Dark $Z$ Model Parameters in the $B$ and $K$ Meson Decays

Ahmed Rashed

The study investigates flavor-changing neutral current (FCNC) decays of $B$ and $K$ mesons in the context of a dark $U (1)_{D}$ model with a dark photon/dark $Z$ mass between 10 MeV a…

hep-ph2024

Searching for neutral state in the rare decay $J / ψ \to e^{+} e^{-} ϕ$

Ahmed Rashed

We investigate the decay process $J / ψ \to e^{+} e^{-} ϕ$ , where the relatively clean electromagnetic (EM) transitions dominate at leading order at the tree level, while hadronic…

Constraints on Dark Photon and Dark Z Model Parameters in the B and K Meson Decays

Searching for neutral state in the rare decay J/ψ→e+e−ϕ

Constraints on Dark Photon and Dark $Z$ Model Parameters in the $B$ and $K$ Meson Decays

Searching for neutral state in the rare decay $J / ψ \to e^{+} e^{-} ϕ$